You want a media player for your mac? I say VLC. You can download it for free at
www.versiontracker.com Just search VLC and you will find the link for the download, works great. The only reason I have a PC (piece of crap) is for 3d renderings. Everything else happens on my macs. I have a pimped out iBook, originally a G3 but now I have two G4 processors and two slave hard drives that my friend set up for me. One of the slaves runs a windows clone which is ok. Hope the VLC works for you, I have had no problems at all with it so far. It plays mp3's, mp4's, mpegs, avi, wmv and some others.